Sustainable Diets and Cardiometabolic Health

Inclusion Criteria: * Adults (males and females) between 45 and 70 years of age at the time of inclusion. * Participants must have at least two metabolic alterations: 1) Waist Circumference (WC) \>102 cm (males) or \>88 cm (females); 2) self-reported medication for blood pressure or blood pressure \>130/85 mmHg; 3) self-reported prediabetes or non-fasting plasma glucose 140-199 mg/dL (prediabetes); 4) self-reported lipid-lowering medication or diagnosis of impaired blood lipids (triglycerides: ≥ 150 mg/dL; and HDL: men: \< 40 mg/dL and women: \< 50 mg/dL). * Participants are not institutionalized, able to read and provide consent before participation, and willing to attend in-person visits at the study site. * Participants should have access to a smartphone and computer, or tablet and must be internet-literate. * Understand Danish both in writing and when spoken. Exclusion Criteria: * Participants with any serious illness or history of cancer within the past 5 years (except adequately treated localized basal cell skin cancer or in situ uterine cervical cancer). * Diagnosed with diabetes mellitus, CVD event (myocardial infarction, revascularization procedure, or stroke), or atrial fibrillation. * Participants with diagnosed psychiatric conditions or cognitive impairment. * Current smokers including all kinds of nicotine-containing products. * BMI \>35 kg/m2. * Known or suspected abuse of alcohol or recreational drugs. Regular alcohol consumption exceeding the Danish national guidelines (i.e., more than 10 standard drinks per week or more than 4 drinks on any single day) will be excluded. * Pregnancy or planning a pregnancy in the next year. * Not willing to consume chicken and fish or not willing to make dietary changes related to the intervention. * Participants with multiple food allergies that could hinder adherence to the intervention. * Any other issue that makes the project responsible (PI or medical responsible) doubt the eligibility of the volunteer.